Sir/Mam, in this assignment it is mentioned that "The falling of a body (or object) from a height towards the Earth under the gravitational force of Earth (with no other forces acting on it) is called free fall and such a body is called 'freely falling body'."
Sir/Mam as it is mentioned that "with no other forces acting on it" i.e. on a body or in a object but sir the force of air resistance is acting on the body or in a object so sir how it can be a free falling body?
Answers
Answer:
We neglect air resistance when compared to the acceleration of the falling body.
Explanation:
- A body is said to free fall when there is no other rigid object preventing the body from falling.
- A table restricts a book on it from falling toward the ground. In the same way astronauts in the space station are in the state of free fall since the space station is also experiencing an equal acceleration towards the earth.
- Here in your case air is not a body which can stop the movement of the body. Hence the resistance offered by air is negligible in this case.
Answer:
A free falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall. There are two important motion characteristics that are true of free-falling objects:
-> Free-falling objects do not encounter air resistance.
-> All free-falling objects (on Earth) accelerate downwards at a rate of 9.8 m/s/s (often approximated as 10 m/s/s for back-of-the-envelope calculations)
The term "free fall" is often used more loosely than in the strict sense defined above. Thus, falling through an atmosphere without a deployed parachute, or lifting device, is also often referred to as free fall.